Effect of cold rolling on the elastic properties of (Al2O3)p-Al composite

Mechanical shaping of an aluminium alloy reinforced with Al₂O₃ particulates, (Al₂O₃)_p-Al, was carried out by a cold rolling operation. Rolling was performed unidirectionally in a direction perpendicular to the extrusion direction of the composite, until edge cracks formed. Cold rolling was found to cause particulate cracking and interfacial debonding, as wellas the redistribution of (Al₂O₃)_p. These parameters have significant roles in determining the elastic properties of the resultant composite.